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Establishing minimum clinically important difference values for the Patient-Reported Outcomes Measurement Information System Physical Function, hip disability and osteoarthritis outcome score for joint reconstruction, and knee injury and osteoarthritis out

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World Journal of Orthopedics 2018年第3期9卷 41-49页

作者： Man Hung Jerry Bounsanga Maren W Voss Charles L Saltzman Department of Orthopaedic Surgery operations University of Utah division of Public Health University of Utah Population Health Research Foundation University of Utah

AIM To establish minimum clinically important difference(MCID) for measurements in an orthopaedic patient population with joint *** Adult patients aged 18 years and older seeking care for joint conditions at an orthopaedic clinic took the Patient-Reported Outcomes Measurement Information System Physical Function(PROMIS~? PF) computerized adaptive test(CAT), hip disability and osteoarthritis outcome score for joint reconstruction(HOOS JR), and the knee injury and osteoarthritis outcome score for joint reconstruction(KOOS JR) from February 2014 to April 2017. MCIDs were calculated using anchorbased and distribution-based methods. Patient reports of meaningful change in function since their first clinic encounter were used as an *** There were 2226 patients who participated with a mean age of 61.16(SD = 12.84) years, 41.6% male, and 89.7% Caucasian. Mean change ranged from 7.29 to 8.41 for the PROMIS~? PF CAT, from 14.81 to 19.68 for the HOOS JR, and from 14.51 to 18.85 for the KOOS JR. ROC cut-offs ranged from 1.97-8.18 for the PF CAT, 6.33-43.36 for the HOOS JR, and 2.21-8.16 for the KOOS JR. Distribution-based methods estimated MCID values ranging from 2.45 to 21.55 for the PROMIS~? PF CAT; from 3.90 to 43.61 for the HOOS JR, and from 3.98 to 40.67 for the KOOS JR. The median MCID value in the range was similar to the mean change score for each measure and was 7.9 for the PF CAT, 18.0 for the HOOS JR, and 15.1 for the KOOS *** This is the first comprehensive study providing a wide range of MCIDs for the PROMIS? PF, HOOS JR, and KOOS JR in orthopaedic patients with joint ailments.

关键词： Hhip disability and osteoarthritis outcome score for joint reconstruction Patient-Reported Outcomes Measurement Information System Physical Function Knee injury and osteoarthritis outcome score for joint reconstruction Minimum clinically important difference Joint Physical function Minimum detectable change Arthroplasty Orthopaedics Clinical outcomes

FOLMS-AMDCNet:an automatic recognition scheme for multiple-antenna OFDM systems

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Journal of Systems Engineering and Electronics 2023年第2期34卷 307-323页

作者： ZHANG Yuyuan YAN Wenjun ZHANG Limin LING Qing Academy of Aeronautical operations Service Naval Aviation UniversityYantai 264001China

The existing recognition algorithms of space-time block code(STBC)for multi-antenna(MA)orthogonal frequencydivision multiplexing(OFDM)systems use feature extraction and hypothesis testing to identify the signal types in a complex communication ***,owing to the restrictions on the prior information and channel conditions,these existing algorithms cannot perform well under strong interference and noncooperative communication *** overcome these defects,this study introduces deep learning into the STBCOFDM signal recognition field and proposes a recognition method based on the fourth-order lag moment spectrum(FOLMS)and attention-guided multi-scale dilated convolution network(AMDCNet).The fourth-order lag moment vectors of the received signals are calculated,and vectors are stitched to form two-dimensional FOLMS,which is used as the input of the deep learning-based ***,the multi-scale dilated convolution is used to extract the details of images at different scales,and a convolutional block attention module(CBAM)is introduced to construct the attention-guided multi-scale dilated convolution module(AMDCM)to make the network be more focused on the target area and obtian the multi-scale guided ***,the concatenate fusion,residual block and fully-connected layers are applied to acquire the STBC-OFDM signal *** experiments show that the average recognition probability of the proposed method at−12 dB is higher than 98%.Compared with the existing algorithms,the recognition performance of the proposed method is significantly improved and has good adaptability to environments with strong *** addition,the proposed deep learning-based model can directly identify the pre-processed FOLMS samples without a priori information on channel and noise,which is more suitable for non-cooperative communication systems than the existing algorithms.

关键词： blind signal identification(BSI) space-time block code(STBC) orthogonal frequency-division multiplexing(OFDM) deep learning fourth-order lag moment spectrum(FOLMS)

Measurement-while-drilling technique and its scope in design and prediction of rock blasting

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International Journal of Mining Science and Technology 2016年第4期26卷 711-719页

作者： Rai Piyush Schunnesson Hakan Lindqvist Per-Arne Kumar Uday Department of Mining Engineering Indian Institute of Technology Banaras Hindu University Varanasi 221005 India division of Mining and Geotechnical Engineering Lulea Technological University Lulea 97187 Sweden Department of Mining Engineering Lulea Technological University Lulea 97187 Sweden division of operations and Maintenance Engineering Lulea Technological University Lulea 97187 Sweden

With rampant growth and improvements in drilling technology, drilling of blast holes should no longer be viewed as an arduous sub-process in any mining or excavation process. Instead, it must be viewed as an important opportunity to quickly and accurately measure the geo-mechanical features of the rock mass on-site, much in advance of the downstream operations. It is well established that even the slightest variation in lithology, ground conditions, blast designs vis-a-vis geologic features and explosives performance, results in drastic changes in fragmentation results. Keeping in mind the importance of state-of-the-art measurement-while-drilling （MWD） technique, the current paper focuses on integrating this technique with the blasting operation in order to enhance the blasting designs and results. The paper presents a preliminary understanding of various blasting models, blastability and other related concepts, to review the state-of-the-art advancements and researches done in this area. In light of this, the paper highlights the future needs and implications on drill monitoring systems for improved information to enhnnrp th~ hl^tin~ r^HIt~

关键词： Rock blasting Drill monitoring parameters Rock factor Drill rod vibrations

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基于双渠道环境下在位制造商的阻止策略研究

系统工程理论与实践 2018年第9期38卷 2230-2241页

作者：计国君王东 Kim Hua TAN 厦门大学管理学院厦门361005 operations Management & Information Systems division Business School Nottingham University

双渠道运营以提高顾客的购买体验为核心,不仅要求各渠道建立合理定价策略,同时要实现渠道间协同,这放大了制造商与零售商之间乃至整条供应链的冲突,进一步刺激链外企业进入行为,从而加剧在位制造商采取阻止策略.基于链外进入行为的普遍... 详细信息

双渠道运营以提高顾客的购买体验为核心,不仅要求各渠道建立合理定价策略,同时要实现渠道间协同,这放大了制造商与零售商之间乃至整条供应链的冲突,进一步刺激链外企业进入行为,从而加剧在位制造商采取阻止策略.基于链外进入行为的普遍性与在位阻止的现实性,研究结果表明：当进入成本较低时,在位制造商无法阻止外来制造商进入;当进入成本过高时,在位制造商不用改变定价即可阻止进入;而当进入成本适中时,在位制造商可以通过降低产品在直销渠道上的零售价达到阻止进入的目的.同时结合数值计算得到了一些管理启示.

关键词：双渠道定价链外进入阻止策略

ARSlice:Head-Mounted Display Augmented with Dynamic Tracking and Projection

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Journal of Computer Science & Technology 2022年第3期37卷 666-679页

作者： Yu-Ping Wang Sen-Wei Xie Li-Hui Wang Hongjin Xu Satoshi Tabata Masatoshi Ishikawa Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China Institute of Semiconductors Guangdong Academy of SciencesGuangzhou 510651China Data Science Research division Information Technology CenterThe University of TokyoTokyo 113-8656Japan Core Network Department Advanced Operations Development DivisionKDDI CooperationTokyo 206-0034Japan Tokyo University of Science Tokyo 113-8601Japan

Computed tomography(CT)generates cross-sectional images of the *** CT images has been a challenging *** emergence of the augmented and virtual reality technology has provided promising ***,existing solutions suffer from tethered display or wireless transmission *** this paper,we present ARSlice,a proof-of-concept prototype that can visualize CT images in an untethered manner without wireless transmission *** ARSlice prototype consists of two parts,the user end and the projector *** employing dynamic tracking and projection,the projector end can track the user-end equipment and project CT images onto it in real *** user-end equipment is responsible for displaying these CT images into the 3D *** main feature is that the user-end equipment is a pure optical device with light weight,low cost,and no energy *** experiments demonstrate that our ARSlice prototype provides part of six degrees of freedom for the user,and a high frame *** interactively visualizing CT images into the 3D space,our ARSlice prototype can help untrained users better understand that CT images are slices of a body.

关键词： augmented and virtual reality computed tomography(CT)image visualization interactive visualization

Hybrid energy module for remote environmental observations, experiments, and communications

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Advances in Polar Science 2020年第3期31卷 156-166页

作者： Misha B.KRASSOVSKI Jeffery S.RIGGS Chris TAVINO Stan D.WULLSCHLEGER Susan L.HEINZ Environmental Sciences division Climate Change Science InstituteOak Ridge National LaboratoryOak RidgeTN 37831-6290USA Integrated operations Support division Oak Ridge National LaboratoryOak RidgeTN 37831-6290USA Laboratory Modernization division Oak Ridge National LaboratoryOak RidgeTN 37831-6290USA

Increased concerns about climate change have led to a significant expansion of monitoring, observational, and experimental sites in remote areas of the world. Meanwhile, advances in technology and availability of low-power equipment have allowed increasingly sophisticated measurements with a wide variety of instruments. However, the deployment and use of these technologies in remote locations is often restricted not only by harsh environmental conditions, but also by the availability of electrical power and communication options. In some cases, research stations and military installations can provide power for scientific equipment, data acquisition, storage, and transmission. Clustering of research sites near existing infrastructure has had the unintended consequence of limiting a spatial understanding of large geographic regions. Fortunately, the modern market offers many power and communication solutions, but most of them are oriented toward large industrial applications. Use of those solutions to power a research site is limited because of their cost and need for significant modification for the specific research purposes. Each study has its own unique power requirements and needs for proper instrumentation. A power and communication solution for a vast majority of implementations with or without modification would be of considerable benefit. This article describes design of a universal, scalable hybrid energy module for the Next-Generation Ecosystem Experiments Arctic project(https://***/). Two modules were built, and the authors describe their implementation and findings over a 2-year period at a remote field site on the Seward Peninsula in western Alaska, USA.

关键词： solar energy wind energy communications power sources alternative energy NGEE Arctic

Is money going digital? An alternative perspective on the current hype

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Financial Innovation 2018年第1期4卷 216-221页

作者： Daniel Gersten Reiss Department of Banking operations and Payments System’s Research division SBS quadra 3Bloco BEdificio-Sede15 andarBrasiliaDF 70074-900Brazil

Current financial discourse suggests the imminence of a cashless society,a concept that arose from the global popularization of digital financial services and the development of technologies with the potential for application in financial ***,claims about the impending obsolescence of paper money are neither disruptive nor a ***,this paper argues that the conversion of money from paper to bits has been a gradual,adaptive process,and that money is already ***,in this paper we propose that the statuses of electronic money(e-money)and banknotes have switched in the view of monetary authorities.

关键词： Digital money Digital currency E-money Digital financial services

Predictive car-following scheme for improving traffic flows on urban road networks

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Control Theory and Technology 2019年第4期17卷 325-334页

作者： A.S.M.BAKIBILLAH Mahmudul HASAN Md Mustafijur RAHMAN Md Abdus Samad KAMAL School of Engineering Monash UniversityBandar SunwaySelangorMalaysia Technology operations Department Grameenphone Ltd.DhakaBangladesh Department of Electrical and Electronic Engineering Manarat International UniversityDhakaBangladesh division of Mechanical Science and Technology Graduate School of Science and TechnologyGunma UniversityJapan

Driving behavior is one of the main reasons that causes bottleneck on the freeway or restricts the capacity of signalized *** paper proposes a car-following scheme in a model predictive control(MPC)framework to improve the traffic flow behavior,particularly in stopping and speeding up of individual vehicles in dense urban traffic under a connected vehicle(CV)*** information received through vehicle-to-vehicle(V2V)communication,the scheme predicts the future states of the preceding vehicle and computes the control input by solving a constrained optimization problem considering a finite future *** objective function is to minimize the weighted costs due to speed deviation,control input,and unsafe *** scheme shares the planned driving information with the following vehicles so that they can make better cooperative driving *** proposed car-following scheme is simulated in a typical driving scenario with multiple vehicles in dense traffic that has to stop at red signals in multiple *** speeding up or queue clearing and stopping characteristics of the traffic using the proposed scheme is compared with the existing car-following scheme through numerical simulation.

关键词： Car-following scheme model predictive control vehicle string connected vehicle environment distributed control

Cognitive Supervisor for an Autonomous Swarm of Robots

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Intelligent Control and Automation 2017年第1期8卷 44-65页

作者： Vladimir G.Ivancevic Darryn J.Reid Decision Sciences Joint and Operations Analysis DivisionDefence Science&Technology GroupCanberraAustralia

As a sequel to our recent work [1], in which a control framework was developed for large-scale joint swarms of unmanned ground (UGV) and aerial (UAV) vehicles, the present paper proposes cognitive and meta-cognitive supervisor models for this kind of distributed robotic system. The cognitive supervisor model is a formalization of the recently Nobel-awarded research in brain science on mammalian and human path integration and navigation, performed by the hippocampus. This is formalized here as an adaptive Hamiltonian path integral, and efficiently simulated for implementation on robotic vehicles as a pair of coupled nonlinear Schr?dinger equations. The meta-cognitive supervisor model is a modal logic of actions and plans that hinges on a weak causality relation that specifies when atoms may change their values without specifying that they must change. This relatively simple logic is decidable yet sufficiently expressive to support the level of inference needed in our application. The atoms and action primitives of the logic framework also provide a straight-forward way of connecting the meta-cognitive supervisor with the cognitive supervisor, with other modules, and to the meta-cognitive supervisors of other robotic platforms in the swarm.

关键词： Autonomous Robotic Swarm Cognitive Supervisor Hippocampus Path Integration and Navigation Hamiltonian Path Integral Modal Logic Nonlinear Schrodinger Equation Reasoning about Actions and Plans